iSonic 150 for light wind (heavy sailor)

[prpa]

Dear all
I am planing to buy iSonic 150 and 11,5m2 sail for light wind conditions.
I see that recomended fins are up to 62 cm. I weight 95 kg and I am also
asking for FIN size advice. Should I look for fin ~66cm.
Board I will buy new and for sail I look for 2nd hand race sail like NP RS / Gastra Nitro or Vapor, ... any way 1-2 old seazon sail from guys witch go
for Formula races (semi profesional in my region). I can get this kind of kit
relativly cheap.

I also have Futura 133 with sails 6.0, 7.5, 9.0 (fins 48, 53).

Is there someone who has kit like this iSonic150 and what is your impression?